Hydrodynamic retarder

Details Hydrodynamic retarder Hydrodynamic retarder

1986-09-24

1988-05-17

Falk, Joseph

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

188294, F16D 5702

Patent

active

047444436

ABSTRACT:
A hydrodynamic retarder is revealed having a rotor blade wheel and a stator blade wheel each with two different types of blading, i.e. an inner blading enclosed by an outer blading. The two blade rings are provided with blades inclined in opposite directions. This allows said retarder to be operated in both directions of rotation. A particularly advantageous development of the invention is that the retarder is operated as a counter-rotating retarder, whereby the stator is rotated in the opposite direction by means of a reversing gear. Thus, a vehicle can be hydrodynamically braked almost to standstill. When integrating the retarder into a rail vehicle, the rotor can be driven by the wheel sets separately from the stator. An identical braking effect is obtained in both directions of travel. Moreover, the inner working circuit enclosed by the outer working circuit can be arranged radially in such a manner that the radially outer front cross-sectional area for the fluid flow is of identical size as the radially inner front cross-sectional area. This prevents shock losses and increases the braking power of the retarder.

REFERENCES:
patent: 3481148 (1969-12-01), Muller et al.
patent: 4440272 (1984-04-01), Bieber

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